Included for backward compatibility. Use the Report Designer instead.
This system variable is undocumented in the original VFP9 help file,
but the following documentation was found in the FoxPro for Windows 2.6 help, and may still be valid:
Prints boxes.
_BOX = expL
|
Remarks
_BOX is included for backward compatibility. Use the Report Writer instead.
_BOX contains a logical value that determines whether or not boxes (as specified with the DEFINE BOX command) are printed around lines of text. If _BOX is set to .T., the default, then boxes are printed; otherwise, they are not.
This system memory variable affects only boxes that you create with DEFINE BOX.
You can draw boxes on the screen or in a window with @ ... BOX or @ ... TO.

Microsoft Visual FoxPro 9 SP2 Help file, VFPX Edition v1.08